Adding-machine.



A. A. HORTON.

4 ADDING MACHINE. APPLICATION FILE-D AUG.30, i915- RENEWED NOV. 8, 1919.

5 SHEETS-SHEET 2.

I 65 Jim/2E7 06836 A. A. HORTON.

' ADDING MACHINE. APPLICATION FILED AUG-30,12 315. REN EWED NOV. 8, 1919. lfigfifiQQ I Patented Dec. 80,1919

v '5 SHEETS-SHEET A. A. HORTON.

ADDING MACHINE. APPLICATION FILED AUG.30, I915- RENEWED NOV. 8, I9I9.

1 26,504. Patented Des. 30,1919.

5 SHEETS-SHEET 5- MN w n w (1W1 f Q 1 NE Jive/7T5? I UNITED STATES PATENT OFFICE.

, ALLENL-n IionroN, or DETROIT, MICHIGAN, ASSIGNOR TO BURROUGHS ADDING MACHINE COMPANY, or DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

AD ING-MACHIN Specification of Letters Patent.

Patented Dec. 30, 1919.

Application filed August 30, 1915, Serial No. 48,007. Renewed November 8, 1919. Serial No. 336,732.

To all whom "it may concern:

Be it known that I, ALLEN A. HORTON, a

. citizen of the United States, residing at Detroit in the county of WVayne and State of Michigan, have invented certain new and useful Improvements in Adding-Machines, of which the followingis a specification.

This invention relates to zeroizing mechanism of machines of the general type shown in my prior Patent No. 1,016,501 issued Februa of canoe ing or zeroizing in machines of this type is to advance all wheels except the unit-s wheel to positions short of 0 and to complete the zeroizing through the operation of the transfer or carrying mechanisms as a result of turning the units wheel on to OI formed by reciprocation of a crank handle provided for the purpose, and a single frociprocation of-that handle is sufficient.

However, it is the habit of some operators 7 to give the handle two reciprocations with an arrangement for prohibiting execution the idea of making sure that complete zeroizing of the wheels is accomplished) This practice has developed the possibility of error by reason of interference with the carrying action, in so quickly executing the second stroke of the handle as to cut short the time required for the transmission of the carrying impulse throughout the series of wheels. It is entirely feasible to supply means for over-coming this diiiiculty, and in my companion application Serial No. 48,006, filed Aug. 30, 1915, I have shown of a second stroke of the canceling or zeroizing handle until the carrying impulse has been completely transmitted.

By the present invention I overcome the difficulty in quite a different way for instead cf following the old process of zeroizin'g and providing safe guards against mis-operation, I-depart from tha-told process altogether and adopt a plan which makes wholly unnecessary the introduction of controlling devices for regulating successive strokes of the zeroizing handle.

In most if not all the machines of the type above referred to which have attained a commercial status, the carryingrnechanisms between wheels employ springs for transmitting carrying impulses and these 6, 1912. The most familiar way The operation is customarily per-.

wheels from running backward past the and prohibit backward rotation of wheels,

for example, the familiar back stop pawls I and the ratchet and pawl driving connections. In carrying out my invention I provide for disabling all such devices. and relieving the wheels from all interference with backward rotation so that they will be erfectly free to-run backward, and I provide for setting appropriate stops to prevent the 0 position, all as a result of one and the same act of the operator whichmay,and in the present embodiment of my invention does, consist in simply pulling forward a crank handle such as that heretofore commonly employed in these machines. ably include auxiliary means of a positive character for driving the wheels backward in order to make absolutely certain of their being all brought to 0 even though the springs might for some reason fail in their duty in this regard. I

Besides supplying a form ofzeroizing mechanism which does not involve transmission of carrying impulses and so avoids all difficulties such as above mentioned as being occasioned by interference withtransmission of such impulses, my present invention has the further advantage of present: ing a much simplified zeroizing equipment for machines of this character, the number of parts being materially reduced as compared with previous constructions. I

In the drawings which accompany .and form part of this specification, Figure .1 represents a complete machine in right side elevation Without its casing and with some parts some of the parts in section and some omitted to disclose others. Fig. 8 is a view somewhat similar to Fig. 5 and taken sub: stantially on the line of 88 of Fig. 7, but differing from Fig. 5 in that the parts are conditioned as when the zeroizing handle ,has just started its stroke.

While as above stated the general type of machine to which the present invention more particularly relates is that illustrated in my said prior patent, I have chosen for the purposes of the present disclosure a later construction of machine corresponding more closely with that illustrated in the Gooch Patent No. 1,128,679,. issued February 16, 1915, as to the registering mechanism, and with the machine of the later Gooch Patent No. 1,150,937, issued Aug. 24, 1915, as to over-throw preventing devices, and with the machine of my prior Patent No. 1,156,600, issued October 12, 1915, as to actuator mechanismintervening between the keys and the register mechanism.

Referring first to Figs. 1, 2 and 7, A desig.-

nates' the numeral wheels and A the associated gear wheels which carry the planet pinions D engaged wlth sun gears E and with internal gears F on the numeral wheels,

as in my said Patent 1,016,501. The carrying mechanisms comprise cams G and sun gears P carried by said wheels, intermediate internal gear wheels C on the hubs of the first mentioned sun gears E, oscillating gear carriers L whose gears N and O mesh re-. spectively with said internal gears C and sun gears P, and levers H in gear with said carriers L and held against the cams G by springs 'J, all substantially as shownin said Gooch Patent No. 1,128,679, see particularly Figs. 10 to 12thereof, Gear wheels E mesh with the gear wheels A and are driven through ratchet. and pawl connections by oscillating segments E which derive power from the keys F: through connections of the kind shown in my said Patent No. 1,156,600. These connections comprise stop bars E coupled to the segments, bell crank levers.

B to which the rear ends of said stop bars are pivotally connected, and key-driven levers F connected by links F to the for ward portions of the stop bars.

It will be understood that through these driving connections and restoring springs of a customary character, depression of the keys causes oscillation of segments E and that through the medium of aforesaidratchet and pawl devicesand the planetary gearing first mentioned, the numeral wheels are advanced in a clockwise-direction as viewed from the right hand side and it- Will be further understood that the corresponding rotation of the cams G swings the upperarms of levers H forward tensioning thesprings J which, when the high points of the cams pass the lever studs H operate to transmit' carrying impulses as fully explained in said Gooch PatentNo. 1,128,679.

This of course involves the rotation of the lntermedlate gear wheels C in a counterclockwise direction, the ratio of gearing being such, in the organization here shown, that in transmitting the carrying impulse one of these intermediate gear wheels makes one-fifth of a turn. In the machine of said Gooch patent zeroizing of the, numeral wheels is accomplished by oscillating the gear carriers L in opposition to the springs J, as by forcingforward the upper arms of the levers H here shown, the intermediate gears C being locked against rotation in a clockwise direction so that the numeral wheels will be advanced'by the turning of the gears N, O and P. The zeroizing in the Gooch machine is completed by transmission of'carrying impulses in general correspondence With the zeroizing action of the machine of my said prior Patent 1,016,501.

Coming now to the particulars of my'present invention, I pursue a procedure which is in a sense the reverse of that pursued by Gooch in that I turn the Wheels rearward to 0 by rocking the upper arms of the levers H rearward under the power of their springs J, besides which I provide for positively driving said le'ver arms rearward, the intermediate gear wheels C being locked against a counter-clockwise rotation so as to convert the rearward swing of the levers H into backward rotation of the numeral wheels through the turning of the gears N, O and P. As a preliminary to releasing of the wheels for backward turning'(throu h disablement of restaining devices as will e presently pointed out) I force the intermediate gears C to a slight extent in a clockwise direction in order to separate the lever studs H from the surfaces of the cams G. This I accomplish by the same devices which serve to lock said intermediate gears against counter-clockwise rotation. Referring to Figs. 3, 5 and 8, these devices are in the form of levers 2 hung upon a cross rod 3, their upper arms terminating in hooks 2 for engaging the studs 6 on the gear disks C. These hooks of course stand normally out of the paths of said studs as illustrated in Fig.

'3. The ends of these hooks on said arms disks C so as to slightly rotate the latter in a clockwise direction as illustrated in Fig. 8. Such rotation of said gear disks will swing the gear carriers L in aclockwise direction and therefore swing the upper arms of the levers H in a counter-clockwise direction separating their studs H from the peripheries of the cams G. Continued forward swinging of the lever arms 2 results in full engagement of the hooks 2 over the studs 6 'as illustrated in Fig. 5, whereby the gear disks C are locked against rotation in a counter-clockwise directlon wh ch would otherwise occur upon the rearward swinging of the lever arms H by their springs J. With said disks locked against such move- 'Inent and with the numeral wheels free to rotate backward, said springs J will so rotate them, for the rearward swinging of a lever armH and the resultant counter-clockwise'turning of the gear carrier L, causes the pinion N to traverse the internal gear teeth of the disk C as a fixed rack and the gear pinion O to correspondingly rotate and to turn the sun gear P which is fastened to the numeral wheel. Of course this involves the backward turning of the cam G which is also fastened to that wheel, in which con- .nection it should be noted that the periphery.

tact when the wheels are at O, and, in the interests of perfect 'alinement, it is desirable to provide special means for" definitely checking the wheels against backward rotation beyond the 0 position. To this end I mount upon the-before mentioned cross rod 3 another set of levers 4 whose upper arms are formed as hooks at, quite similar to the hooks 2, and adapted to be thrust forward .in the paths of lugs, a, on the adjacent numeral wheels; One of these lugs is shown in section in Fig. 5, where the associated hook' l is in overthrowpreventing position.

These lugs may also be seen in Fig. 7 where the lateral relationship of parts is better disclosed. It will here be noted that each lever 4 is at the left of the. numeral wheel with which it cooperates and its yoke-form hub portion 4* is assembled with a similar hub portion of that one of the levers 2 which acts upon the studs 6 of the gear disk G to the right of said numeral wheel.

The above described overthrow-preventing and gear-locking lever arms are operated by the same machine element, which is in the form of a ball comprising arms 5 and a cross-rod 6 which occupies cam'slots 2 and 4 in lower arms of the levers 2 and 4, as shown in Fig. 3. The said bail-arms 5 are secured to a rock shaft S of, similar character to that sodesignated in my said prior Patent 1,016,501. The-cam slots 2 and 4 are preferably so formed as to provide for. forward swinging of the upper arms. of the levers 4 in advance of the forward sw'inging of the-upper arms of the levers 2, so 'a's to guard against the possibility ofbackward' movement of a numeral'wheel already standing at zero, in consequence of the slight forc j ing clockwise of the gear disk .C by the associated hook 2. This. might. result in apositioning of the wheel stop-lug a in front I of the hook 4 and a consequent locking up of the machine and damaging straln upon the handle connections.

The rock shaft '8 is operatively connected witha crank handle W, as, in -the construction of my said Patent 1,016,501, through the medium of acrank arm 8, links S.and

W springs X and. crank arm W? on the handle shaft. The downward swinging of the'bail 5 6, as caused by pulling forward the crank handleW, besides operating the levers 2 and a as above described, also .serves to drive the levers H by way of supplementing the action of the springs J, and insuring a zeroizing action of said levers-even though the springs should fail. To this end the levers H have a special formation being formed below their pivot rod k, with elbow shaped arms H The rearwardly extending portions of these arms are adapted to be acted upon by the bail cross rod 6'to1swing the levers H in a clockwise direction in case'the springs J should fail for any reason to effectively swing said levers in the zeroizing operation.

Passing next to the matter of disabling various restraining deviceswhich would interfere with backward rotation of the numeral wheels,.I shall first pointout 'a special formation of the gear wheels E ,'which,'1be'; sides having advantages irrespective of. the zeroizing operation, lends itself to simplification in the matter of disabling back-stop .pawls and driving pawls as will presently appear. This gear wheel is constructed with a circular series of ratchet lugs E with'open space between them as clearly shown in Figs. 3' and a. Back-stoppawls R pivoted on a frame cross rod R outside the circle of said ratchet lugs, have forwardly extending arms with terminal noses which are forced into the spaces between said lugs by springs R the relationshipbeing such as to permit the wiping of the lugs past said noses when the gear is turning in a counter clockwise direction but such as to cause the said noses to block turning of said gear in the opposite direction. Alongside the gear E and mounted to turn on the same shaft is a disk 7 which is compounded with a gear wheel 8 in mesh with the associated sector E. A. driving pawl 9 is pivoted upon said disk and occupies a position within the circle of ratchet lugs Ff, the end of its upper arm being designed to act against beveled rear sides of said lugs to drive the gear wheel E in a.

counter-clockwise direction. This engagement is enforced as usual by a spring and the pawl has a tail to abut against the hub of the disk for limiting its pivotal movement. It will be seen that this construction makes possible the employment of a single ratchet element for both back-stopping and driving purposes and that this element is part of the driven gear wheel. Furthermore the construction facilitates the matter of disabling the pawls for zeroizing purposes. To this end the back stop pawls B have offset tail pieces R in rear of their pivot rod R and extending in the planes of the driv- -.ing pawls. In the zeroizing operation the back stop pawls are swung in opposition to their springs B so as to remove their noses entirely from the spaces between the ratchet lugs, andby the same act their tail pieces R are caused to operate upon the driving pawls so as to disengage them from said ratchet lugs. It should be noted that the driving pawlsextend laterally beyond the ratchet lugs, (Fig. 6) and it is this extended portion of a driving pawl which is engaged by the off-set tail portion of the associated back-stop pawl so as to avoid any interference with reverse rotation of the gear WheQ E which accompanies a backward turning of the numeral wheel.

I I shall next point out the means employed for collectively displacing or disabling the back-stop pawls. A rock shaft 10 extends from side to side of the machine and is journaled in the supporting side plates thereof. This rock shaft runs above the tails of the back stop pawls and is cut out to accommodate them as clearlyshown in Figs. 2

and 3. The flat faces thus formed diametri- I cally ofthe rock shaft run closely adjacent the off-set tail portions of the back stop pawls, and it will. be seen that rocking of the shaft in a clockwise direction will disengage the front arms of the pawls from the ratchet lugs as illustrated in Fig. 5. Furthermore the tail pieces of the back-stop pawls will be driven against the driving pawls and the latter will be forced within the circle of the ratchet lugs as also illustrated in Fig. 5. Said rock shaftis operated through connection with the before mentioned rock shaft S. Thus the latter carries at its left hand end a crank arm 11 having a stud 12 which occupies the cam slot 13 of a lever 13. The latter is pivoted at its lower end upon a frame cross rod 14 and its upper end is bifurcated to embrace a stud upon a crank arm 10 fastened to the rock shaft 10. It

will be obvious that through these connections the rock shaft will be oscillated as an accompaniment to reciprocating the zeroizing handle W. 1

The machine here shown is equippedwith the over-throw preventing devices of the Gooch Patent No. 1,150,937. The purpose of these devices as explained in said patent isto prevent the'driven wheel from running ahead of the drivingelement, and also to prevent overthrow of said drivenwheel upon the cessation of the stroke of the drivin ele ment. These devices comprise a notche disk 15 compounded with the before mentioned driver pawl carrying disk 7 and the gear wheel 8 (Fig. 4); and a mutilated pinion.

16 on the same hub with and laterally spaced from a gear pinion 17 which is in mesh with the gear wheel E see Fig. 2. The relationship of said devices is such that with the associated numeral wheel otherwise free to rotate backward, its backward rotation would be interfered with by them, for backward rotation of the numeral wheel involves rotation of the gear wheel E and corresponding rotation of the pinion 17 and mutilated pinion 16 and a turning of the latter is necessarily accompanied by the turning of the notched disk 15 which is constantly in gear with the actuating segment E. Of course the numeral wheel in turning backward to 0 should move independently of the actuator mechanism, and consequently the overthrow-preventing devices above described must be disabled in a zeroizing operation. This I provide for by mounting the mutilated pinions 16 with their companion pinions 17 upon a shaft 19 which is arranged to slide laterally in the division plates of the frame work, said pinions 17 being broad enough to maintain engagement with the gear wheels E The said shaft 19 is confined between arms 10 and 10, the former being part of the before-mentioned crank arm 10 secured to the left-hand end of the rock-shaft 10, and the.

arm 1'0 being part of a similar elbow-shaped piece 10 secured to the right hand end of the shaft. These arms have reversely related cam portions 10 and 10. Normally the left-hand end of the shaft is in'engagement with the offset portion of the arm 10 inward of the cam portion 10 as shown in Fig. 2, and the right hand end of said shaft is adjacent the inner portion of the other arm 10 Thus the shaft is in its righthand position with the mutilated gears and notched disks cotiperat'ively related to each other. When the zeroizing handle is pulled forward and the shaft 10 rocking as before described, the arms 10 and 10 are swung lated gears 16 are disolaced-from the planes oflZt-he notched disks.

teeth against the side of the disk, upon return of the zeroizing handle, will not lock up the machine or cause damaging strains, as might otherwise be the case. The spring 20 will yield, and then as soon as the pinion has thereafter turned sufliciently to realine the teeth and notches. the pinion will slide into proper position.

It is des1rable to employ an interlock between amount keys and zieroizing handle to prevent simultaneous use of'these manipulative elements. To this end each bell crank lever B has a segmental rearward extension B alined with the notch of a rock shaft '24.

' The latter is connected by a crank arm 23 and link 22 to a latch lever 19. Normally this lever is restrained by an extension S of the handle link S as shown in Fig. 1, so that its latching arm 19 -is in position to block the handle W,-a shoulder of said latching arm being in the path of movement of a stud w, on the segment integral with the handle-shaft crank-arm W A spring 20 tendsto retract said latching arm and does so as the handle is pulled forward. The

rocking of the lever 19 rocks the shaft 24E through the connections described and sections of said shaft back of thenotches swing in front of'the bell cranks B and thereby prevent depression of amount keys. Vice 'versa, depression of an amountv key with the zeroizing handle at normal swings the seg ment B of the associated bell crank into the notch of the shaft and thereby blocks the latch-lever 19 so that it remains in position to block the handle.

It is to be understood that my invention herein disclosed is susceptible of embodiment in other forms than that shown, and that appended claims are purposely drawn to express the full scope of the invention without limitation to structural details- I claim: I

l. The combination of register wheels, means for advancing them, carrying springs repeatedly tensioned by successively continuous rotations of the wheels, means for periodically releasing the power so stored in said springs, as governed by completion of rotations of'wheels of respectively lower orders,

means for transmitting such spring power to wheels of respectively higher orders, means for holdin the Wheels advanced, and

means for disabling said latter means and permitting the springs to turn the wheels backward, with provisions for limiting the backward turning so as to insure zero-positioning of the wheels.

2. The {combination of register wheels, means for advancing them, carrying springs repeatedly tensioned by successively continuous rotations of the wheels, means for periodically releasing the power so stored in said springs, as governed by completion of rotations of wheels of respectively lower orders, means for transmitting such spring power to wheels of respectively higher orders, means for holding the wheels advanced, means for preventing their over-rotation, and means for disabling said two latter means and permitting the springs to turn thewheels backward with provisions for limiting the backward turning so as to insure zero-positioning of the wheels.

3. The combination of register wheels, actuators therefor, pawl and ratchet connections between the actuators and wheels, carrying springs repeatedly tensioned by successively continuous rotations of the wheels, means for periodically releasing the power so stored in said springs, as overned by completion of rotations of whee s of respectively lower orders, means for transmitting such spring power to wheels of respectively higher orders, and means for disabling the pawl and ratchet connections to permit backward turning of the wheels-by said springs, with provisions for limiting the backward turning so as to insure zero-positioning of the wheels.

4. The combination of register wheels, actuators therefor, pawl and ratchet connections between the actuators and wheels, carrying springs repeatedly tensioned by successively continuous rotations of the wheels,

means for periodically releasing the power so stored in said springs, as governed by completion of rotations of wheels of respectively lower orders,means for transmitting such spring power to wheels of respectively higher orders, backstop pawls for the wheels, and means for disabling the pawl andratchet connections and said backstop pawls to permit backward turning of the wheels by said springs, with provisions for limiting the backward turning so as to insure zero-positioning of the wheels.

5. The combination of register wheels, actuators therefor, pawl and ratchet connections between the actuators and wheels, carrying springs-repeatedly tensioned by successively continuous rotations of the wheels, means for periodically releasing the power so stored in said springs, as governed by completion of rotations of wheels of respectively lower orders, means for transmitting such spring power to wheels of respectively higher or ers, means for preventlng the r over-rotation, and means for disabling the latter means and the said pawl and ratchet connections to permit said springs to turn the wheels backward, with provisions for limiting the backward turning so as to insure zero-positioning of the wheels.

' 6. The combination of register wheels, actuators therefor, pawl and ratchet connections between the actuators and wheels, carrying springs repeatedly tensioned by successively continuous rotations of the wheels, means for periodically releasing the-power so stored in said springs, as governed by completion of rotations of wheels of respectively lower orders, means for transmitting such spring power to wheels of respectively higher orders, backstop pawls for the wheels, means for preventing their over-rotation, and means for disabling the pawl and ratchet connections, the backstop pawls and the overrotation preventing means to permit backward turning of the wheels by said springs, with provisions for limiting the backward turning so as to insure zero-positioning of the Wheels.

7. The combination of register c-wheels, means for advancing them, carrying springs repeatedly tensioned by successively continuous rotations of the wheels, means for periodically releasing the power so stored in said springs, as governed by completionof rotations of wheels of respectively lower orders, means for transmitting such spring power to wheels of respectively higher orders, means for holding the wheels advanced, and means for disabling said latter means and permitting the springsio turn the wheels backward, with provisions for driving the wheels backward in aid of the springs, and provisions for limiting the backward turning so as to insure zero-positioning of the wheels.

8. The combination of register wheels, ac 'uators therefor, one-way driving. connections between the actuators and wheels, notched disks turning with the actuators,mutilated gears turning with the wheels and coacting with said disks, springs opposing advance of the wheels, and means for effecting relative lateral displacement between the notched disks and the mutilated gears to permit backward turning of the wheels by said springs.

9. The combination of register wheels, actuators. therefor, driving connections between said actuators and wheels comprising ratchet wheels-and pawls, springs opposing advance of the wheels, pawls preventing backward movement of wheels, and means for displacing said latter pawls, these pawls adapted to dlsplace the pawls of the driving connections, substantially as and for the purpose described.

10. A driven wheel having a single set of ratchet-projections, a driving pawl and ing a tail'portion to engage and displace the other pawl when the first pawl is moved out of enga ement with the ratchet projections.

12. T e combination of register wheels, having cams and sun gears, intermediate gears geared to higher order wheels, gear carriers whose gears mesh with said sun gears and said intermediate gears, gear-carrier oscillating members controlled by the cams, springs applied to said members, means for holding the wheels from backward movement, and means for disabling said latter means and locking the intermediate gears where-by to cause backward turning of the wheels by said springs.

'13. The combination of register wheels having cams and sun gears, intermediate gears geared to higher order wheels, gearcarriers whose gears mesh with said sun gears and said intermediate gears, gear-carrier oscillating members controlled by the cams, springs applied to said members, means for holding the wheels from backward movement, and means for disabling said latter means and lockingthe intermediate gears whereby to cause backward turning of the wheels by said springs, together with provisions for preliminarily turning the intermediate gears to disengage said members from the cams.

14. The combination of register wheels having cams and sun gears, intermediate gears geared to higher order wheels, gear carriers whose gears mesh with said sun gears and said intermediate gears, gearcarrier oscillating members controlled by the cams, springs applied to said members, means for holding the wheels from backward movement, and means for disabling said latter means and locking the intermediate gears whereby to cause backward turning of the wheels by said springs, to-

gether with means for positively driving said members in aid of the springs.

15. The combination of register wheels having cams and sun gears, intermediate gears geared to higher order wheels, gear carrierswhose gears mesh .with said sun gears and said intermediate gears, gear-carrier oscillating members controlled by the cams, springs applied to said members, means for holding the wheels from backward movement, and means for disabling said latter means and lockin the intermediate gears whereby to cause ackward turning of the wheels by said springs, said means comprising a reciprocatingstructure and a series of leversoperated thereby to lock said ars. 16. The combination of register wheels having cams and sun gears, intermediate gears geared to higher order wheels, gear .carrlers whose gears mesh with said sun gears and said intermediate gears, gear-carrier oscillating members controlled bythe cams, springs applied to said members,

means for holding the wheels from back- I ward movement, and means for disabling said latter means and locking the intermediate gears whereby to cause backward turning of the wheels by said springs, said means 17. The combination of register wheels,

actuators therefor, one-way drivin connections between the actuators an wheels,

notched disks turning with the actuators,

mutilated gears turning with the Wheels and coactin with said disks, and means for effecting re ative lateral displacement between the notched disks and the mutilated gears to permit backward turning of the wheels. 1

18. The combination of register wheels, actuators therefor, one-way driving connections between the actuators and Wheels, notched disks turning with the actutors, mutilate'd gears coacting with said disks and compounded withpinions in gear with the wheels, a sliding shaft supporting said mutilated gears, and springs holding the latter in position on said shaft. p

ALLEN A. HORTON.

Witnesses:

R. S. MIELERT, J A. 'BROPHY. 

